airy construction which prevents your back from sweating lumbar vertebrae is supported at home and when travelling worked in massage areas can be used on a car seat or other seats at home ergonomic pleasant relaxing back length can be adjusted using the tapes when not in use can be folded up for storage size back approx 40 x 39 cm seat approx 38 x 41 cm material mesh fabric 100 polyamide nylon frame carbon steel massage zone 100 polypropylene weight approx 450 g